WSP07896

• File Number: 8449.600
• Description: Chatfield Reservoir
• State: CO
• Basin: South Platte
• Date: 2/1/1976
• Author: M W Bittinger & Asso
• Title: Preliminary Feasiblity Estimate of the Potential Use of the Conservation Pool of Chatfield Reservoir
• Water Supply Pro - Doc Type: Publication

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TABLE OF CONTENTS

INTRODUCTION . . .. '" . . . . . . .
.SCOPE. . . . . . . . . . . . . . . . . . . .
EXPECTED EVAPORATION LOSSES FROM THE CHATFIELD
CONSERVATION POOL. . . . . . . . .

DROUGHT PERIOD REPLACEMENT REQUIREMENT .

Potential Yield pf the 1975 Storage Right

Operational Analysis of the 1950's Drought Period

Potential Sources of Replacement Water. . . . . .

Page
1
1

2
10

10

13

19

19
19

Phipps Water Rights. . .
Acquisition and Transfer
Acquisition and Transfer
Flow Priorities. . . .
Ground-Water Exchange. .

PRELIMINARY FEASIBILITY CONSIDERATIONS

. . . . . . . . . .

of Reservoir Water.
of Parts of Direct-

20
20

21

22

. .

CONCLUSIONS AND RECOMMENDATIONS. . . .

LIST Of FIGURES

1. Pool Operation Studies with 3000 AF Annual Replacement . . .. 15
2. Pool Operation with 2650, 2500 and 2380 AF Annual Replacements 16

LIST OF TABLES

1.
2.

Pool Content and Surface Area in the Project Range
Net Monthly Lake Evaporation Statistical Summary

2
5
6
6
6

3.

One Year's Annual Net Evaporation, . . .

4,.
5.
6.

Three Consecutive Years' Annual Net Evaporation.
Five Consecutive Years' Annual Net Evaporation.
Annual Excess Replacement Requir~nent in Acre-feet for
an Annual Replacement Input of 3250 Acre-Feet. . . .
Water Input Assumptions for the Operation Case Studies
Result Summary for Case Studies 1 through 3 of Figure. 1.
Result Summary for Case Studies 1 through 3 of Figure 2.

8

13
14

17

7.

8.

9.